Non gassing battery separator and method of production

Abstract

Abstract PRODUCTION OF INORGANIC POROUS SINTERED BATTERY SEPARATOR ESSENTIALLY ELIMINATING FORMATION OF GAS WHEN IN CONTACT WITH A ZINC ELECTRODE, AND ALSO HAVING A DENDRITE FORMATION INHIBITING EFFECT ON SUCH ZINC ELECTRODE, PERMITTING LONG CYCLE LIFE OF A HIGH ENERGY DENSITY BATTERY SUCH AS A SILVER-ZINC OR NICKEL-ZINC BATTERY, AND PROVIDING A SEALED BATTERY, PRODUCED ACCORDING TO ONE EMBODIMENT BY INITIALLY FIRING A MIXTURE OF MAGNESIUM-BEARING MATERIAL, E.G., MGO, A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ZINC-BEARING MATERIAL SUCH AS ZNO AND MANGANESE-BEARING MATERIAL SUCH AS MNO, LEAD-BEARING MATERIAL SUCH PBO, AND SILICA (SIO2), AT TEMPERATURE AT THE RANGE OF ABOUT 1,100 TO ABOUT 1,400*C. TO PRODUCE A MAGNESIUM SILICATE-ZINC SILICATE, OR MAGNESIUM SILICATE- MANGANESE SILICATE COMPOSITION, IN EACH CASE CONTAINING COMBINED LEAD, E.G., AS LEAD SILICATE, GRANULATING AND COMPACTING SAID COMPOSITION INTO PLAQUES, AND SINTERING SAID COMPACTED PLAQUES AT TEMPERATURE RANGING FROM ABOUT 1,000 TO ABOUT 1,300*C., TO PRODUCE POROUS SINTERED SEPARATOR MEMBERS, IN THE FORM OF A SINTERED SOLID SOLUTION OF MAGNESIUM SILICATE, ZINC SILICATE OR MANGANESE SILICATE, AND COMBINED LEAD, E.G., IN THE FORM OF LEAD SILICATE, HAVING GOOD TRANSVERSE STRENGTH AND LOW RESISTIVITY.

Inventors

• 👤 J Smatko

Bibliographic Details